LS6 vs. LS6 85TB vs. BBK85 vs. FAST92
02-08-2010, 04:35 PM
#41
Im also went from a ls1 intake to 85/85 bbk intake.. looks good and works great! thanks for the results.
by the way boosting on a bbk intake i think you will need to reinforce the removable plate in the bottom
by the way boosting on a bbk intake i think you will need to reinforce the removable plate in the bottom
02-09-2010, 08:30 AM
#43
I felt a nice gain from my 85mm Typhoon intake and 85mm throttle body...have yet to go wot. No dynos yet but im been driving these cars for years so I like to think I have a pretty accurate buttometer Anybody that says you dont gain any power from these alum. intakes is fos.
12-11-2011, 10:21 PM
#45
I found this dyno pic today I never posted. Shows the differences a little better, I should have posted this. This doesn't look as nice as a finished graph most would like to see. But has better info, I didnt mess with the auto scaling, and forced scaling in the dynojet software.
Im gona add it to the 1st post
Im gona add it to the 1st post
12-11-2011, 10:47 PM
#46
This is really good info. Alot of people don't like the metal intakes but LOOK! Only the people that have them said they were good. Great info OP
This really proves what people have been saying for awhile. A FAST really shines on H/C cars. Unless you have a nice set of heads, stay with what you have unless it's the LS1 intake. A buddy of mine has a full bolt on LS6. He had a decent street tune and a wideband. He started with a modified LS6 intake(epoxied the intake and TB, punched it to 82mm) and Grannitelli maf. Then switched over to a ported FAST 90 with an 85mm MAF, tuned it on the dyno and picked up 13rwhp. How much of that was the tune? I'd say at least half.
I'm not sure what he picked up by modifying his LS6 intake but it took 5% more injector duty cycle to maintain the same AFR if that means anything.
This really proves what people have been saying for awhile. A FAST really shines on H/C cars. Unless you have a nice set of heads, stay with what you have unless it's the LS1 intake. A buddy of mine has a full bolt on LS6. He had a decent street tune and a wideband. He started with a modified LS6 intake(epoxied the intake and TB, punched it to 82mm) and Grannitelli maf. Then switched over to a ported FAST 90 with an 85mm MAF, tuned it on the dyno and picked up 13rwhp. How much of that was the tune? I'd say at least half.
I'm not sure what he picked up by modifying his LS6 intake but it took 5% more injector duty cycle to maintain the same AFR if that means anything.
Last edited by mypoorLS1; 12-11-2011 at 10:49 PM. Reason: Adding info
12-12-2011, 04:30 PM
#49
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I purchased the BBK intake based on your efforts! I purchased a L33 and needed to swap to an intake with a manual TB. You are correct. LS6 intakes are always $300+. I purchased the BBK for $406 delivered from Streetsideauto.
Todd
Todd
12-12-2011, 05:12 PM
#50
nice write up I;m just going thru the same stuff with my z ,I got hold of a nx express intake and had to laugh at the heat sink question ,someone told me edelbrock didn't get rich selling plastic intakes well written article thanks
12-12-2011, 08:43 PM
#51
https://ls1tech.com/forums/dynamomet...out-gians.html
stock 1999 LS1-
LS1 intake vs vic jr
stock 1999 LS1-
LS1 intake vs vic jr
Stock LS1 (1999) swaped in a 1955 chevy, th400.
LS1 intake, unported TB, (running a 90 bend with a big 9inch cone) LS1 cam, springs, manifolds. Got it running tuned it, made sure it was a good core. Then customer wanted to make it look better with visual things, and wanted this intake.
Only change was a put of the box vic Jr, the rails, and a FAST (accufab) 4150 TB (no spacer) and a 14x3 air cleaner.
Was surprised to see this power curve, 100% stock internal.
LS1 intake, unported TB, (running a 90 bend with a big 9inch cone) LS1 cam, springs, manifolds. Got it running tuned it, made sure it was a good core. Then customer wanted to make it look better with visual things, and wanted this intake.
Only change was a put of the box vic Jr, the rails, and a FAST (accufab) 4150 TB (no spacer) and a 14x3 air cleaner.
Was surprised to see this power curve, 100% stock internal.
03-29-2012, 08:31 PM
#57
Thanks for the awesome info and great write up. Nice to see some real results and. It just "I heard" info. I'm starting with a bone stock 2000ls1 and plan to do cam, bbk long tubes, bbk intake with 85 tb and larger air meter. Should be done in the next few months and will post results from the tune. Will try to get a pull and readout of the stock numbers before as a comparison. Again thanks for a awesome post.
05-14-2012, 01:30 AM
#58
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I did for the FAST setup, because that was the descreeed 85mm maf (not the easiest to tune for sure, esp for low airspeed street driving) That took a little time street tune, but WOT for the pulls while it was on the dyno that night. Mike (@ Newera) did 1-2 pulls with a backup pull it was good.
But for the LS6/ported stock TB that was the tune Mike did for me I drove/raced on for last year, and this year till that night (basline). Then put the 85mm TB on, with the stock maff. (I never took the maff off the bellow/lid). And did 1-2 pulls quick, I have a 02 bung in my wideband and watched the AFR on a LM1. My old roomate Bpipe95 on here, and another friend helped me for the night, some others stoped by too. But it was fine, I forgot the numbers only maybe .2 difference. Just WOT only it was fine. But your should do a tune, for the larger TB moving more air at part throttle, or if you change maff for sure. Same for the BBK, with the 85mm TB, just put the stock bellow/maff and my lid on , and did the pulls. AFR was close. Mikthat tunes my car, wasn't right there on the dyno at the time (probably on the phone, and going Emails, it wasn't really late yet, lol.
I had alot of work to do changing all this stuff that night and getting my car off the dyno that night. There was a customer getting a tune in the AM and I had to work eaily also. I know all these things you'd like to do, but I basicly had a small window of time I could use a dyno. So now looking back I wish I did some other things. Like the BBK 85/85 would make more power with a descreend/ported stock maff, Or a 85 or larger maff. You can get a 85mm truck maff CHEAP! I got mine for like $30 shipped, so that would the way to go, USE the larger TB and intake. Thats cheap and might be another 3-5 whp witch is twice the gain over a LS6 intake on my car. If you have a LS1 intake that would be the way to go.
BBK used to but they don't anymore, It was a nice job too. You could always polish it yourself. Just just the top ribs, that would be really easy. And paint the rest some other guys I saw did that and it looked really nice.;l
But for the LS6/ported stock TB that was the tune Mike did for me I drove/raced on for last year, and this year till that night (basline). Then put the 85mm TB on, with the stock maff. (I never took the maff off the bellow/lid). And did 1-2 pulls quick, I have a 02 bung in my wideband and watched the AFR on a LM1. My old roomate Bpipe95 on here, and another friend helped me for the night, some others stoped by too. But it was fine, I forgot the numbers only maybe .2 difference. Just WOT only it was fine. But your should do a tune, for the larger TB moving more air at part throttle, or if you change maff for sure. Same for the BBK, with the 85mm TB, just put the stock bellow/maff and my lid on , and did the pulls. AFR was close. Mikthat tunes my car, wasn't right there on the dyno at the time (probably on the phone, and going Emails, it wasn't really late yet, lol.
I had alot of work to do changing all this stuff that night and getting my car off the dyno that night. There was a customer getting a tune in the AM and I had to work eaily also. I know all these things you'd like to do, but I basicly had a small window of time I could use a dyno. So now looking back I wish I did some other things. Like the BBK 85/85 would make more power with a descreend/ported stock maff, Or a 85 or larger maff. You can get a 85mm truck maff CHEAP! I got mine for like $30 shipped, so that would the way to go, USE the larger TB and intake. Thats cheap and might be another 3-5 whp witch is twice the gain over a LS6 intake on my car. If you have a LS1 intake that would be the way to go.
BBK used to but they don't anymore, It was a nice job too. You could always polish it yourself. Just just the top ribs, that would be really easy. And paint the rest some other guys I saw did that and it looked really nice.;l
I'm a bit confused... Are you suggesting running an 85 MAF with a stock LS1 intake?
Would the same apply to a stock LS6 intake?
What about throttle body choices?
Port the stock TB?
06-17-2012, 08:42 AM
#59
dont know how true that is, have seen it books that the weiland and the ls6 do make exactly the same... so i could believe that... if you are running nitrous, its a nice to know your manifold wont blow to bits if it backfires... other than adding another15 lbs over the nose i wouldnt spend hard earned money on it
06-17-2012, 02:23 PM
#60
WRONG. The Weiand is slightly better than the LS6. I do agree if you pay full price for it you are stupid but I have seen them go for $250ish and If you can port it its not a bad deal